I feel APT-x HD gives lower latency while gaming. In APTX sometimes you get intermittent delays or sync issues.

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Definitely.

APTX HD and APTX LL (low latency) and very new APTX adaptive are all FAR superior to APTX.

The above (my previous post) pictured free application is a way (one of very few ways) to tell if Windows 10 actually uses APTX with an APTX cerified gadget (in my case Creative Outlier Golds earphones with Bluetooth 5).
Right now I use Killer Wireless 1535 (Bluetooth 4.2), but tomorrow I get WIFI 6 AX200 with bluetooth 5 and hope to see some positive difference re. Latency as Bluetooth 5 gets higher transfer rates compared to Bluetooth 4.2.
If not, then at least I get power savings for Bluetooth 5 for the earphones, better speed and compatibility with WIFI 6 routers and also Killer software will not keep bugging me no more trying to install itself once I blink LOL.

This AX200 laptop card cost me 20 EUR brand new, so no big deal.

Anyways, the latency issues with Bluetooth are pretty disappointing. It is 2020 Bluetooth. With music playbeck it does not matter, for films it is adjustable, but for e.g. Youtube and especially games ...what a mess LOL

Apparently -30ms makes lips and talk synchro in films, but this is using SBC and AAC bluetooth supported earphones (20 EUR mpow2)

Using APTX headphones (Creative Outlier Gold) I need -100ms (!!!) synchro lip adjustment in films. The sound is (much) better than with above cheap headphones, but it is 80% better hardware and 20% better codec. This is tragedy for gaming

Will go back to wired headphoens for games only, which is not a problem as I must be half meter from my 13 inch screen while playiing games anyway.

I'm telling you, the 13 r3 is one unique machine. I was so happy that I was able to get my hands on one, even if I use it mainly for my work only. I still believe it's an irreplaceable machine.
It was the perfect machine I could ask for. No compromises.

I still love it more than my RTX 2080 m15 r2 that I have. Which I also like a lot. But not nearly as much as the 13 r3. I will be sad to see it become outdated and become "unusable" for my use case. But for me, it's a collectors item that laptop.

Unfortunately, the bluetooth latency is still there (same) coming from Killer's Bluetooth 4.2 now to Bluetooth 5 LE.

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Bluetooth version and naming conventions are a bit confusing and borderline misleading. Basically, there are two flavors of Bluetooth: Classic and LE. All headphones today use Bluetooth Classic. Bluetooth Audio for LE was I believe announced today and it will take some time before LE Audio headphones start hitting the market.

So the latency thing is an inherent problem with Bluetooth Classic and hopefully it will be much less with LE Audio, among with other new features (such as multicast).

Talking about Killer's and drivers, am I the only one having issues with the sound? When I'm online, any audio stream is croaking, almost poppin'. If I reinstall the audio driver the problem is resolved, but only temporary. After a bunch of restarts it comes back